SYS.DLMLockModes
hidden datatype class SYS.DLMLockModes extends %Library.String
ODBC Type: VARCHAR
Valid lock modes for acquiring and converting SYS.DLM locks.This class is used internally by InterSystems IRIS. You should not make direct use of it within your applications. There is no guarantee made about either the behavior or future operation of this class.
Parameters
parameter DISPLAYLIST = ,SHARED,EXCLUSIVE,NULL,PROTECTED WRITE,PROTECTED READ,CONCURRENT READ,CONCURRENT WRITE,NO LOCK;
The valid values for the lock mode are: NULL, SHARED, EXCLUSIVE, PROTECTED WRITE
PROTECTED READ, CONCURRENT WRITE, CONCURRENT READ. These correspond to the
lock modes implemented by the o/s supplied distributed lock manager. Consult
the o/s documentation for lock mode compatibility information.
NO LOCK exists in the DISPLAY LIST and can be displayed as the current state of a lock but it cannot be set. This is used when a new lock object is created or when an existing lock is released.
NO LOCK exists in the DISPLAY LIST and can be displayed as the current state of a lock but it cannot be set. This is used when a new lock object is created or when an existing lock is released.
parameter VALUELIST = ,SH,EX,NL,PW,PR,CR,CW,NOLOCK;
Inherited description: Used for enumerated (multiple-choice) attributes.
VALUELIST is either a null string ("") or a delimiter
separated list (where the delimiter is the first character) of logical values.
If a non-null value is present, then the attribute is restricted to values
in the list, and the validation code simply checks to see if the value is in the list.